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CERT-NL | ||||
| Author/Source | : | Xander Jansen | Index | : | S-00-07 | |
| Distribution | : | World | Page | : | 1 | |
| Classification | : | External | Version | : | 1 | |
| Subject | : | HP: Sec. Vulnerability with Ignite on Trusted systems | Date | : | 19-Feb-2000 | |
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CERT-NL | ||||
| Author/Source | : | Xander Jansen | Index | : | S-00-07 | |
| Distribution | : | World | Page | : | 1 | |
| Classification | : | External | Version | : | 1 | |
| Subject | : | HP: Sec. Vulnerability with Ignite on Trusted systems | Date | : | 19-Feb-2000 | |
By courtesy of HEWLETT-PACKARD COMPANY we received information on a vulnerability with Ignite on Trusted systems.
CERT-NL recommends to follow the guidelines outlined in section I.B.
HEWLETT-PACKARD COMPANY SECURITY ADVISORY: #00111, 17 Feb 2000
The information in the following Security Advisory should be acted upon as soon as possible. Hewlett-Packard Company will not be liable for any consequences to any customer resulting from customer's failure to fully implement instructions in this Security Advisory as soon as possible.
| PROBLEM: | Trusted systems may have vulnerabilities if a password field in /etc/passwd is blank. |
| PLATFORM: | HP-9000 Series700/800 running release HP-UX 11.X only. |
| DAMAGE: | Increase of privileges. |
| SOLUTION: | Verify that all entries in /etc/passwd have "*" in the password field if the system is trusted. |
I.
- Background
Each password field in /etc/passwd should be "*" in a trusted system. This is normally handled automatically. One way for the password field to be set to a blank is to create a system image of a trusted system with Ignite-UX and not save /etc/passwd. By default Ignite-UX omits /etc/passwd.
- Fixing the problem
In a trusted system if the system or the /etc/passwd file has been restored, verify that the password fields in /etc/passwd are "*". If Ignite-UX is used to create an image of a trusted system, _override_the_default_ so that /etc/passwd is saved in the image. See man(1M) make_sys_image and note the -f file option.
CERT-NL is the Computer Emergency Response Team for SURFnet customers. SURFnet is the Dutch network for educational, research and related institutes. CERT-NL is a member of the Forum of Incident Response and Security Teams (FIRST).
All CERT-NL material is available under:
http://cert.surfnet.nl/
In case of computer or network security problems please contact your local CERT/security-team or CERT-NL (if your institute is NOT a SURFnet customer please address the appropriate (local) CERT/security-team).
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| Email: | cert-nl@surfnet.nl | ATTENDED REGULARLY ALL DAYS |
| Phone: | +31 302 305 305 | BUSINESS HOURS ONLY |
| Fax: | +31 302 305 329 | BUSINESS HOURS ONLY |
| Snailmail: | SURFnet bv Attn. CERT-NL P.O. Box 19035 NL - 3501 DA UTRECHT The Netherlands |
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NOODGEVALLEN: 06 22 92 35 64 ALTIJD
BEREIKBAAR
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